Dear all, I had encounter a problem with sending mail out using SMTP (both for reply and email ticket) to an external account, (but it work fine to an email address within my organization) they do not get email at all My Mail server is Exchange 2003 OTRS: 1.3.2 OS SuSE Linux 9.3 The error is Traceback: ERROR: OTRS-CGI-10 Perl: 5.8.6 OS: linux Time: Wed Aug 3 16:38:09 2005 Message: Can't send to: nuttapongp@gmail.com! Enable debug for more info! Traceback (6410): Module: Kernel::System::Email::SMTP::Send (v1.7) Line: 92 Module: Kernel::System::Email::Send (v1.6.2.1) Line: 210 Module: Kernel::System::Ticket::ArticleSend (v1.19.2.1) Line: 1491 Module: Kernel::Modules::AgentCompose::SendEmail (v1.70) Line: 522 Module: Kernel::Modules::AgentCompose::Run (v1.70) Line: 90 Module: ModPerl::ROOT::ModPerl::Registry::opt_otrs_bin_cgi_2dbin_index_2epl::handler (v) Line: 638 Module: (eval) (v1.73) Line: 202 Module: ModPerl::RegistryCooker::run (v1.73) Line: 202 Module: ModPerl::RegistryCooker::default_handler (v1.73) Line: 168 Module: ModPerl::Registry::handler (v1.99) Line: 30 So I thought it was something to do with # SendmailModule in /opt/otrs/Kernel config.pm file which previously I set as $Self->{'SendmailModule'} = 'Kernel::System::Email::SMTP'; $Self->{'SendmailModule::Host'} = 'mail.example.com'; $Self->{'SendmailModule::Port'} = '25'; $Self->{'SendmailModule::AuthUser'} = ''; $Self->{'SendmailModule::AuthPassword'} = ''; Then I modify it to $Self->{'SendmailModule'} = 'Kernel::System::Email::SMTP'; $Self->{'SendmailModule::Host'} = 'mail.example.com'; $Self->{'SendmailModule::Port'} = '25'; $Self->{'SendmailModule::AuthUser'} = 'techsupport'; $Self->{'SendmailModule::AuthPassword'} = 'acaroot'; Then the error had change to be as below instead Traceback: ERROR: OTRS-CGI-10 Perl: 5.8.6 OS: linux Time: Wed Aug 3 16:18:20 2005 Message: SMTP authentication failed! Enable debug for more info! Traceback (6288): Module: Kernel::System::Email::SMTP::Send (v1.7) Line: 72 Module: Kernel::System::Email::Send (v1.6.2.1) Line: 210 Module: Kernel::System::Ticket::ArticleSend (v1.19.2.1) Line: 1491 Module: Kernel::Modules::AgentCompose::SendEmail (v1.70) Line: 522 Module: Kernel::Modules::AgentCompose::Run (v1.70) Line: 90 Module: ModPerl::ROOT::ModPerl::Registry::opt_otrs_bin_cgi_2dbin_index_2epl::handler (v) Line: 638 Module: (eval) (v1.73) Line: 202 Module: ModPerl::RegistryCooker::run (v1.73) Line: 202 Module: ModPerl::RegistryCooker::default_handler (v1.73) Line: 168 Module: ModPerl::Registry::handler (v1.99) Line: 30 So could anyone advice me where else could be wrong and How could I fix it? Moreover how to Enable debug? With Best Rgds Nuttapong